Necklace of Fireballs VEquipment 13
Source Pathfinder Core Rulebook
Price 1,600 gp
Weight negligible
This string of beads appears to be a hemp string with lustrous red beads of various sizes hanging from it. When activated, it briefly appears in its true form: a golden chain with golden spheres attached by fine threads.
This necklace has one 14d6 fire damage, two 12d6 fire damage and four 10d6 fire damage beads with a DC 32 basic reflex save. When all the beads are gone, the necklace becomes a non-magical hemp string.
Activate 
Interact
Effect You detach a sphere from the necklace, causing it to glow with orange light. After you activate a sphere, if you or anyone else hurls it (an Interact action with the ranged trait), it detonates as a fireball where it lands. Your toss can place the center of the fireballed trait), it detonates as a fireball where it lands. Your toss can place the center of the fireball anywhere within 70 feet, though at the GM's discretion you might need to make an attack roll if the throw is unusually challenging. If no one hurls the sphere by the start of your next turn, it turns into a non-magical red bead.
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.
EvocationEffects and magic items with this trait are associated with the evocation school of magic, typically involving energy and elemental forces.
InvestedA character can wear only 10 magical items that have the invested trait. None of the magical effects of the item apply if the character hasn't invested it, nor can it be activated, though the character still gains any normal benefits from wearing the physical item (like a hat keeping rain off their head).
MagicalSomething with the magical trait is imbued with magical energies not tied to a specific tradition of magic. A magical item radiates a magic aura infused with its dominant school of magic. Some items or effects are closely tied to a particular tradition of magic. In these cases, the item has the arcane, divine, occult, or primal trait instead of the magical trait. Any of these traits indicate that the item is magical.